What are the prerequisites for DCA?

Practical Docker experience (6+ months minimum). Familiarity with Linux fundamentals, networking basics (ports, protocols), and container concepts. No formal prior certifications required, but solid understanding of containerization principles is essential.

How should I prepare for DCA?

Study duration depends on your experience level and schedule. Use our study plans above to create a structured preparation schedule. We recommend combining NerdExam practice with Docker's official learning resources for the best results.

Are NerdExam DCA exam questions accurate?

Yes. Our 166+ questions are verified through expert review and community validation. Each question includes detailed explanations.

Can I use NerdExam DCA as my only study resource?

Real exam questions are essential but work best alongside official documentation, hands-on labs, and vendor training. We recommend combining NerdExam practice with Docker's official learning resources for the best results.

Docker

DCA Real Exam Questions

Docker Certified Associate. Everything you need to prepare, practice, and pass.

166

Questions

8

Exam Domains

Included

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Certification Overview

The DCA tests Docker Swarm as the primary orchestrator (not Kubernetes), with heavy emphasis on image management, registry operations, and cluster networking. Core areas include container isolation mechanisms (namespaces, cgroups), persistent storage strategies, Swarm service management, and security practices like image signing and secret handling.

What This Certification Proves

The Docker Certified Associate (DCA) validates core competency in designing, building, and managing containerized applications using Docker. This certification demonstrates practical expertise in Docker architecture, Swarm orchestration, and production-ready container deployment—essential for DevOps engineers and platform teams standardizing on Docker.

Who Should Take This Exam

DevOps engineers, container platform engineers, and system administrators with 1-2+ years of hands-on Docker experience. Best suited for practitioners already running Docker in development or staging environments who want formal validation of their orchestration and containerization skills.

Topic Breakdown

8 domains covering 166 questions

Domain	Questions	Weight
Container Orchestration	53	32%
Security	26	16%
Image Creation, Management, And Registry	22	13%
Installation And Configuration	22	13%
Storage And Volumes	20	12%
Networking	19	11%
Storage	3	2%
Orchestration	1	1%

Study Plans

Choose a study plan that matches your schedule and experience level

30 Days

Intensive Sprint

Week 1-2

Master fundamentals: Container Orchestration
Read Docker official documentation
Complete 6 questions daily

Week 3

Deep dive: Security
Review weak areas from results
Take 2 full-length exams

Week 4

Review all flagged questions
Timed exams to build stamina
Final revision of key concepts

60 Days

Balanced Approach

Week 1-2

Survey all exam domains
Set up study environment
Begin with foundational topics

Week 3-4

Focus: Container Orchestration
Focus: Security
3 questions daily

Week 5-6

Focus: Image Creation, Management, And Registry
Hands-on labs if applicable
Review explanations for wrong answers

Week 7-8

Complete all 166 questions
Identify and eliminate weak areas
Take 3 full-length timed tests

90 Days

Comprehensive Study

Month 1

Learn all exam domains at a comfortable pace
Build strong foundational knowledge
2 questions daily

Month 2

Deep dive into each domain
Hands-on practice and labs
Take weekly timed exams

Month 3

Work through all 166 questions
Identify and eliminate weak areas
Take 3 full-length timed exams

DCA-Specific Tips

Build and push images to a registry weekly—focus on Dockerfile optimization and Docker Content Trust signing to master image creation domain
Run a local Docker Swarm cluster (3+ nodes minimum) and practice service deployments, rollouts, and failure recovery for hands-on orchestration
Deep-dive on networking: create overlay networks, test port mapping scenarios, and troubleshoot multi-host communication across Swarm nodes
Study Linux namespaces and cgroups directly—read Linux kernel docs and inspect running containers with `docker inspect` and `/proc` filesystem
Practice Swarm service constraints, placement preferences, and update strategies; 40% of exam complexity comes from advanced scheduling
Review Docker security: image scanning, secret management, RBAC in Swarm, and container isolation—security is heavily weighted
Simulate production troubleshooting: deliberately break volumes, networking, and services, then diagnose using logs and `docker stats`

Relevant Career Roles

Docker/Container Platform EngineerDevOps Engineer (container-focused)Site Reliability Engineer (SRE)Cloud Infrastructure SpecialistApplication Deployment Engineer

Sample Questions

Try 5 free questions from the DCA question bank

Q1Image Creation, Management, and Registry

In Docker Trusted Registry, how would a user prevent an image, for example 'nginx:latest' from being overwritten by another user with push access to the repository?

Q2Storage and Volumes

Will this command display a list of volumes for a specific container? Solution: 'docker container inspect nginx'

Q3Container Orchestration

Does this command create a swarm service that only listens on port 53 using the UDP protocol? Solution: 'docker service create --name dns-cache -p 53:53/udp dns-cache'

Q4Image Creation, Management, and Registry

You set up an automatic pruning policy on a DTR repository to prune all images using Apache licenses. What effect does this have on images in this repository?

Q5Storage and Volumes

Which one of the following commands will result in the volume being removed automatically once the container has exited?

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